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A118342 Self-convolution cube of A108447. 3

%I #3 Mar 30 2012 18:36:56

%S 1,3,15,85,519,3330,22135,151089,1052805,7458236,53554548,388913046,

%T 2851368587,21076979445,156907929177,1175381112901,8853057357159,

%U 67007699270040,509390314298820,3887605401119964,29775366104932044

%N Self-convolution cube of A108447.

%o (PARI) {a(n)=polcoeff((serreverse(x*(1-x+sqrt((1-x)*(1-5*x)+x*O(x^n)))/2/(1-x))/x)^3,n)}

%Y Cf. A108447, A118341, A118343.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Apr 25 2006

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Last modified July 26 15:23 EDT 2024. Contains 374635 sequences. (Running on oeis4.)